CN102650062A - Cold-rolled sheet surface phosphating film stripping agent and use method thereof - Google Patents
Cold-rolled sheet surface phosphating film stripping agent and use method thereof Download PDFInfo
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- CN102650062A CN102650062A CN2010105971333A CN201010597133A CN102650062A CN 102650062 A CN102650062 A CN 102650062A CN 2010105971333 A CN2010105971333 A CN 2010105971333A CN 201010597133 A CN201010597133 A CN 201010597133A CN 102650062 A CN102650062 A CN 102650062A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000003814 drug Substances 0.000 claims abstract description 18
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000002904 solvent Substances 0.000 claims abstract description 6
- 239000011734 sodium Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 abstract description 20
- 230000007797 corrosion Effects 0.000 abstract description 19
- 238000004519 manufacturing process Methods 0.000 abstract description 17
- 239000003795 chemical substances by application Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 8
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 238000002161 passivation Methods 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 abstract 2
- 239000012752 auxiliary agent Substances 0.000 abstract 2
- 229910000397 disodium phosphate Inorganic materials 0.000 abstract 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 abstract 1
- 238000005238 degreasing Methods 0.000 description 46
- 229910019142 PO4 Inorganic materials 0.000 description 44
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 44
- 239000010452 phosphate Substances 0.000 description 44
- 238000012876 topography Methods 0.000 description 30
- 239000000243 solution Substances 0.000 description 11
- 239000013078 crystal Substances 0.000 description 10
- 238000005406 washing Methods 0.000 description 9
- 239000012530 fluid Substances 0.000 description 8
- 230000008859 change Effects 0.000 description 6
- 238000005237 degreasing agent Methods 0.000 description 6
- 239000013527 degreasing agent Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 230000002950 deficient Effects 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- 239000012670 alkaline solution Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 238000009713 electroplating Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229940117975 chromium trioxide Drugs 0.000 description 2
- WGLPBDUCMAPZCE-UHFFFAOYSA-N chromium trioxide Inorganic materials O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 2
- GAMDZJFZMJECOS-UHFFFAOYSA-N chromium(6+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Cr+6] GAMDZJFZMJECOS-UHFFFAOYSA-N 0.000 description 2
- 239000012459 cleaning agent Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 206010023126 Jaundice Diseases 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000007516 brønsted-lowry acids Chemical class 0.000 description 1
- 150000007528 brønsted-lowry bases Chemical class 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 210000000981 epithelium Anatomy 0.000 description 1
- -1 iron ions Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 230000003381 solubilizing effect Effects 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000005028 tinplate Substances 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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- Chemical Treatment Of Metals (AREA)
Abstract
The invention discloses a cold-rolled sheet surface phosphating film stripping agent and a use method thereof, wherein a solute of the solution comprises the following components in percentage by mass: 0.02-0.75% of main agent, 0.20-0.40% of auxiliary agent and water as solvent, wherein the main agent is one of sodium hydroxide and potassium hydroxide, and the auxiliary agent is KCl and NaHCO3、Na2HPO4One kind of (1). And (3) sequentially adding a quantitative main medicament and an auxiliary medicament into a solvent for dissolving, and fixing the volume, wherein the conductivity is less than or equal to 700 mu s/cm, the pH value is more than 10 and less than or equal to 13, the temperature is 5-40 ℃ when the agent is used, and the treatment time is 50-120 s. The invention has the advantages and effects that: the production cost is low; the preparation method is simple and is suitable for field operation; the environmental pollution is less; the production efficiency is high; the solution components and the pH value are stable, and the labor intensity of workers is reduced; can effectively prevent the cold-rolled sheet for household appliances from generating over-passivation corrosion.
Description
Technical field
The present invention relates to a kind of cold-reduced sheet alramenting film stripper, particularly a kind of cold-reduced sheet alramenting film stripper and method of use of using in field of household appliances that be applicable to.
Background technology
Household electrical appliances are one of cold rolling high-end products with cold-reduced sheet.The raising day by day of Along with people's standard of living, people are also increasingly high to the requirement of household appliances, have the good functional performance except requiring household appliances, and NOT-function performances such as people are anti-corrosion to it, decoration have also had higher requirement.
Household electrical appliances are carried out application with cold-reduced sheet handle, be present vast household electrical appliances manufacturer for guarantee household electrical appliances with cold-reduced sheet have that good decorate properties adopts with corrosion resisting property the most directly, the also tangible method of effect.Household electrical appliances carry out bonderizing with cold-reduced sheet before application, can significantly improve decorate properties and the corrosion resisting property of household electrical appliances with cold-reduced sheet, so the quality of phosphatization quality can directly have influence on the NOT-function performance of household appliances.
The phosphorization filming reaction is a series of very complicated processes; The phosphating process of situ production and household electrical appliances all can produce serious influence to the phosphatization quality of household electrical appliances with cold-reduced sheet with the quality of cold-reduced sheet own; Therefore; In actual phosphatization production process, phosphatization defectives such as phosphatize phosphate coat crystal grain is thick, phosphatize phosphate coat is inhomogeneous, phosphatize phosphate coat is not fine and close, phosphatize phosphate coat turns blue, phosphatize phosphate coat jaundice appear through regular meeting, have a strong impact on the ordinary production of household electrical appliances manufacturer.At present, in order to solve above-mentioned phosphatization defect problem, the method that manufacturer adopts is to carry out bonderizing again after the phosphatize phosphate coat on above-mentioned cold-reduced sheet surface is peeled off.Through retrieval and consulting, the medicament of peeling off phosphatize phosphate coat at present has two kinds:
The one, phosphatize phosphate coat epithelium stripper, it consists of: chromium trioxide (5wt%)+water (95wt%), working conditions is: soak sample 15min down at 75 ℃.Use this medicament to carry out peeling off of phosphatize phosphate coat; Cause energy dissipation, production cost to improve owing to heat, the phosphatize phosphate coat splitting time needs 15min simultaneously, more time-consuming, reduction labour productivity; The sexavalent chrome that contains in the chromium trioxide most serious of all is a highly toxic substance; Because sexavalent chrome toxicity is stronger, the RoHS of European Union instruction 2002/95/EC throws in that Cr (VI) waits six kinds of objectionable impuritiess to make the restriction regulation in the electronic electric equipment in European Union market after to 1 day July in 2006, and the while is along with the enhancing of China joined WTO and people's environmental consciousness; Begun to forbid chromic use at production fields such as household electrical appliances; Therefore, contain chromic phosphatize phosphate coat stripper and can't use in the household electrical appliances production scene at all, can only use as detecting the heavy method of phosphatize phosphate coat film in the laboratory.
The 2nd, utilize basic soln to clean; Alkaline solution is generally little to corrosion of metal property than acid, and this mainly contains the reason of two aspects: the one, and in basic soln, the metallic surface is prone to generate the oxyhydroxide or the oxide compound of indissoluble; Metal there is provide protection, corrosion is slowed down; The 2nd, in alkaline solution; The oxygen electrode current potential is more negative than the current potential in acid medium with the hydrogen electrode current potential; Therefore; And little than in the acidic medium of the potential difference between the equilibrium potential of metal anode solubilizing reaction, promptly corrosion cell " impellent " is smaller, and the also corresponding certainly meeting of corrosion speed is smaller.In addition, because the deoiling effect of alkaline solution is better than acid solution far away, therefore household electrical appliances producer phosphatization production scene all makes in this way at present, is about to the surperficial cold-reduced sheet that is covered with the defective phosphatize phosphate coat and puts into degreasing tank, peels off phosphatize phosphate coat according to degreasing process.With regard to phosphatize phosphate coat itself, its solidity to corrosion is extremely low, and in bronsted lowry acids and bases bronsted lowry solution (even weak acid and weak caustic solution), phosphate layer all is very easy to dissolved.Use the degreasing fluid in the on-the-spot degreasing tank to carry out peeling off of phosphatize phosphate coat, because the basicity of degreasing fluid is bigger, after phosphatize phosphate coat was stripped from, degreasing fluid can directly and react the cold-reduced sheet surface.In basic soln, when pH≤10, the corrosion speed of cold-reduced sheet and pH are irrelevant with cold-reduced sheet for household electrical appliances, and corrosion process receives the oxygen diffusion control, and the relative value of corrosion speed is higher.But because of the increase of critical passivation current density (critical passive current density) with pH reduces; So when the pH value reached 10, the limiting diffusion current of hydrogen reduction was greater than causing blunt electric current, so iron gets into passive state; Current potential becomes+0.1V (SHE) from the activity value of-0.5V (SHE), and corrosion speed descends thereupon.When the pH of alkaline solution value reached 14, iron generation transpassivation was corroded and formation FeO
2 -Ion, in the phosphatization production scene, the pH value of degreasing fluid is in this zone; If therefore degreasing time is long, be certain to cause household electrical appliances the transpassivation corrosion to take place with the cold-reduced sheet surface, make household electrical appliances with cold-reduced sheet condition of surface generation deterioration; The one, cause easily to occur the phosphatization defective in the parkerizing process; Simultaneously pollute degreasing fluid, influence degreasing effect, be unfavorable for normal phosphatization production owing to cold-reduced sheet has produced a large amount of iron ions in the transpassivation corrosion process.
Therefore; The key problem in technology of peeling off that solves existing cold-reduced sheet surface imperfection phosphatize phosphate coat be to use a kind ofly be suitable for situ production, help environmental protection, production cost is low, the timesaving medicament, this medicament can not cause the cold-reduced sheet surface that the transpassivation corrosion takes place and make cold-reduced sheet condition of surface generation deterioration, pollutes degreasing fluid.
The related patent U.S. Patent No. of looking into relevant cold-reduced sheet alramenting film stripper and preparation method thereof has:
1, " degreased cleaning agent and method of use thereof " (patent publication No.: CN 1861775) invention provides a kind of degreased cleaning agent, because the material that uses in this invention is organic composition, therefore can't use for peeling off of phosphatize phosphate coat.
2, " electroplating degreasing agent that is used for secondary cold rolled material " (patent publication No.: CN101629299) invention provides a kind of metal degreasing agent, in particular for the electroplating degreasing agent of secondary cold rolled material.This invention is used for the electroplating degreasing agent of secondary cold rolled material, to dirt have very strong wetting with peel off effect, the greasy dirt after peeling off floats on the liquid level; Discharge easily; And rinsing is easy, has avoided hickie problem and the zinc-plated defective on the tin plate, has reduced the roll marks defective.But because main purpose of the present invention is to remove the greasy dirt on cold-reduced sheet surface, so the alkalescence of grease-removing agent is bigger, is inappropriate for peeling off of phosphatize phosphate coat, causes substrate generation transpassivation corrosion easily.
3, " grease-removing agent that is used for the steel plate cleaning " (patent publication No.: CN101457366) invention; A kind of grease-removing agent that steel plate cleans that is used for is provided; Because main purpose of the present invention is to clean the greasy dirt of surface of steel plate; Therefore the alkalescence of grease-removing agent is bigger, is inappropriate for peeling off of phosphatize phosphate coat, causes substrate generation transpassivation corrosion easily.
4, " a kind of low-alkali non-phosphate degreasing agent " (patent publication No.: CN101407916) invention; A kind of low-alkali non-phosphate degreasing agent is provided; Though this grease-removing agent basicity is low; Be difficult for causing basic surface generation transpassivation corrosion, but since limited in the moity to the solvency action of phosphatize phosphate coat, be unfavorable for the removal of phosphatize phosphate coat.
Summary of the invention
A kind of cold-reduced sheet alramenting film stripper and method of use have been the object of the present invention is to provide.This invention has solved existing household electrical appliances and has been inappropriate for shortcomings such as situ production, contaminate environment, production cost are high, time-consuming with cold-reduced sheet alramenting film stripper, and use of the present invention simultaneously can also solve existing phosphatize phosphate coat stripper and cause the cold-reduced sheet surface that the transpassivation corrosion takes place easily and make cold-reduced sheet condition of surface generation deterioration, pollute the shortcoming of degreasing fluid.
Its technical scheme of the present invention is described below:
Solution's solute of the present invention (mass percent) is composed of the following components: main medicament 0.02%～0.75%, and assistant medicament 0.20%～0.40%, solvent are water, and main medicament is a kind of in sodium hydroxide, the Pottasium Hydroxide, and its assistant medicament comprises KCl, NaHCO
3, Na
2HPO
4In a kind of.Quantitative main medicament, assistant medicament added in the solvent successively dissolve constant volume.
PH value of the present invention is between 10＜pH≤13.
The present invention peels off effect in order to guarantee it, and its use temperature is 5 ℃～40 ℃, treatment time 50～120s.
Method of the present invention is to be grouped into, the selection of pH scope, to reduce environmental pollution, prevent that household electrical appliances from impelling the phosphatize phosphate coat dissolving with cold-reduced sheet generation transpassivation burn into and being suitable for problem such as on-the-spot use to the best one-tenth of phosphatize phosphate coat stripper; After overtesting, analysis, summary, drawing with NaOH or KOH is main medicament, is equipped with KCl, NaHCO
3, Na
2HPO
4In a kind of be assistant medicament; With water is solvent; Through selecting the ratio of medicament, the various chemical contents of adjustment for use, formulated phosphatize phosphate coat stripper pH value can be stablized be controlled between 10＜pH≤13, this phosphatize phosphate coat stripper can address the above problem fully.
Advantage of the present invention and effect are:
1, said various medicament is cheap, buys easily on the market, and production cost is low;
2, compound method is simple, is suitable for execute-in-place;
3, low in the pollution of the environment;
4, effectively stop household electrical appliances to corrode with cold-reduced sheet generation transpassivation;
5, the phosphatize phosphate coat splitting time is 60s～120s, and production efficiency is high; Solution composition, pH value stabilization reduce labor strength.
Description of drawings
Surface topography after the degreasing of Fig. 1-1 a model, the phosphatization
Surface topography after the degreasing of Fig. 1-2 b model, the phosphatization
Surface topography after the degreasing of Fig. 1-3 c model, the phosphatization
Surface topography after the degreasing of Fig. 2-1 d model, the phosphatization
Surface topography after the degreasing of Fig. 2-2 e model, the phosphatization
Surface topography after the degreasing of Fig. 2-3 f model, the phosphatization
Surface topography after the degreasing of Fig. 3-1 g model, the phosphatization
Surface topography after the degreasing of Fig. 3-2 h model, the phosphatization
Surface topography after the degreasing of Fig. 3-3 i model, the phosphatization
Embodiment
Embodiment 1:
Step 1, with 0.552gNaOH and 2.100g NaHCO
3Be dissolved in the 500ml water, with its constant volume 1000ml, this pH value of solution value is 10.2.
Step 2, household electrical appliances are processed into measure-alike a, b, three models of c with cold-reduced sheet, finish size is 100mm * 100mm.
Step 3, with a, b, three models of c respectively through behind identical degreasing → washing → table accent → bonderizing, observe the surface topography after model degreasing, the phosphatization respectively, shown in Fig. 1-1.
Step 4, will pass through b model after step 3 the is handled degreasing → washing → table accent → bonderizing in carry out step 3 once more after, observe its surface topography, shown in Fig. 1-2.
Step 5, under 39 ℃ of conditions, the c model that will pass through after step 3 is handled is put into the solution 114s of step 1 configuration, behind the washing → table accent → bonderizing in carry out step 3 then, observes its surface topography, shown in Fig. 1-3.
Surface topography among step 6, observation Fig. 1-1,1-2, the 1-3 after the various model degreasings; Can find: the surface topography among Fig. 1-1 and Fig. 1-3 is basic identical, and the surface topography among Fig. 1-2 changes greatly, explains that model is through behind the secondary degreasing; The variation that condition of surface takes place is bigger; And model through a degreasing after, after handling with phosphatize phosphate coat stripper of the present invention, condition of surface does not change basically again; Observe the surface topography after the various model phosphatizations among Fig. 1-1,1-2, the 1-3; Can find: the phosphatization crystal grain among Fig. 1-1 and Fig. 1-3 is tiny, even, fine and close, and the phosphatization crystal grain among Fig. 1-2 is thick, inhomogeneous, porosity is big, explains that model is through after secondary degreasing carries out phosphatization again; The variation that phosphorization film quality takes place is bigger; And model through a degreasing after, after handling with phosphatize phosphate coat stripper of the present invention, phosphatize phosphate coat crystal grain is tiny, even, fine and close again.
Embodiment 2:
Step 1,7.392gKOH and 3.728gKCl are dissolved in the 500ml water, with its constant volume 1000ml, this pH value of solution value is 12.8.
Step 2, household electrical appliances are processed into measure-alike d, e, three models of f with cold-reduced sheet, finish size is 100mm * 100mm.
Step 3, with d, e, three models of f respectively through behind identical degreasing → washing → table accent → bonderizing, observe the surface topography after model degreasing, the phosphatization respectively, shown in Fig. 2-1.
Step 4, will pass through e model after step 3 the is handled degreasing → washing → table accent → bonderizing in carry out step 3 once more after, observe its surface topography, shown in Fig. 2-2.
Step 5, under 6 ℃ of conditions, the f model that will pass through after step 3 is handled is put into the solution 70s of step 1 configuration, behind the washing → table accent → bonderizing in carry out step 3 then, observes its surface topography, shown in Fig. 2-3.
Surface topography among step 6, observation Fig. 2-1,2-2, the 2-3 after the various model degreasings; Can find: the surface topography among Fig. 2-1 and Fig. 2-3 is basic identical, and the surface topography among Fig. 2-2 changes greatly, explains that model is through behind the secondary degreasing; The variation that condition of surface takes place is bigger; And model through a degreasing after, after handling with phosphatize phosphate coat stripper of the present invention, condition of surface does not change basically again; Observe the surface topography after the various model phosphatizations among Fig. 2-1,2-2, the 2-3, can find: the phosphatization crystal grain among Fig. 2-1 and Fig. 2-3 is tiny, even, fine and close, and the phosphatization crystal grain among Fig. 2-2 is thick, inhomogeneous; Also has the incomplete zone of many phosphatizations; Model is described through after secondary degreasing carries out phosphatization again, the variation that phosphorization film quality takes place is bigger, and model through a degreasing after; After handling with phosphatize phosphate coat stripper of the present invention, phosphatize phosphate coat crystal grain is tiny, even, fine and close again.
Embodiment 3:
Step 1, with 0.364gNaOH and 3.549g Na
2HPO
4Be dissolved in the 500ml water, with its constant volume 1000ml, this pH value of solution value is 11.4.
Step 2, household electrical appliances are processed into measure-alike g, h, three models of i with cold-reduced sheet, finish size is 100mm * 100mm.
Step 3, with g, h, three models of i respectively through behind identical degreasing → washing → table accent → bonderizing, observe the surface topography after model degreasing, the phosphatization respectively, shown in Fig. 3-1.
Step 4, will pass through e model after step 3 the is handled degreasing → washing → table accent → bonderizing in carry out step 3 once more after, observe its surface topography, shown in Fig. 3-2.
Step 5, under 24 ℃ of conditions, the f model that will pass through after step 3 is handled is put into the solution 92s of step 1 configuration, behind the washing → table accent → bonderizing in carry out step 3 then, observes its surface topography, shown in Fig. 3-3.
Surface topography among step 6, observation Fig. 3-1,3-2, the 3-3 after the various model degreasings; Can find: the surface topography among Fig. 3-1 and Fig. 3-3 is basic identical, and the surface topography among Fig. 3-2 changes greatly, and promptly model is through behind the secondary degreasing; The variation that condition of surface takes place is bigger; And model through a degreasing after, after handling with phosphatize phosphate coat stripper of the present invention, condition of surface does not change basically again; Observe the surface topography after the various model phosphatizations among Fig. 3-1,3-2, the 3-3; Can find: the phosphatization crystal grain among Fig. 3-1 and Fig. 3-3 is tiny, even, fine and close, and the phosphatization crystal grain among Fig. 3-2 almost can't be seen, explains that model is through after secondary degreasing carries out phosphatization again; The variation that phosphorization film quality takes place is bigger; And model through a degreasing after, after handling with phosphatize phosphate coat stripper of the present invention, phosphatize phosphate coat crystal grain is tiny, even, fine and close again.
In sum; Phosphatize phosphate coat stripper of the present invention is when effectively peeling off phosphatize phosphate coat; Do not change the condition of surface of household electrical appliances with the cold-reduced sheet substrate, it is good to pass through behind the bonderizing phosphorization film quality of gained once more, and after utilizing degreasing fluid to peel off phosphatize phosphate coat; Can change the condition of surface of household electrical appliances with the cold-reduced sheet substrate, bad change takes place in the phosphorization film quality through gained behind the bonderizing once more.
Claims (2)
1. cold-reduced sheet alramenting film stripper; It is characterized in that this solution's solute is composed of the following components by mass percentage: major pharmaceutical 0.02%～0.75%; Assistant medicament 0.20%～0.40%; Solvent is a water, and major pharmaceutical is a kind of in sodium hydroxide, the Pottasium Hydroxide, and assistant medicament is KCl, NaHCO
3, Na
2HPO
4In a kind of, pH value 10＜pH≤13.
2. according to the method for use of a kind of cold-reduced sheet alramenting film stripper of claim 1, it is characterized in that its use temperature is 5 ℃～40 ℃, treatment time 50～120s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105971333A CN102650062A (en) | 2011-02-24 | 2011-02-24 | Cold-rolled sheet surface phosphating film stripping agent and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105971333A CN102650062A (en) | 2011-02-24 | 2011-02-24 | Cold-rolled sheet surface phosphating film stripping agent and use method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102650062A true CN102650062A (en) | 2012-08-29 |
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ID=46692185
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105971333A Pending CN102650062A (en) | 2011-02-24 | 2011-02-24 | Cold-rolled sheet surface phosphating film stripping agent and use method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102650062A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1256325A (en) * | 1998-12-10 | 2000-06-14 | 礼泉天赐制造有限公司 | Oil pipe stain eliminating technology |
| CN101426956A (en) * | 2006-04-25 | 2009-05-06 | 株式会社东乡制作所 | Anticorrosive metal part and process for producing the same |
-
2011
- 2011-02-24 CN CN2010105971333A patent/CN102650062A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1256325A (en) * | 1998-12-10 | 2000-06-14 | 礼泉天赐制造有限公司 | Oil pipe stain eliminating technology |
| CN101426956A (en) * | 2006-04-25 | 2009-05-06 | 株式会社东乡制作所 | Anticorrosive metal part and process for producing the same |
Non-Patent Citations (2)
| Title |
|---|
| 《电镀与装饰》 20090430 袁诗璞 第九讲--镀前除油处理 40-44 1-2 第28卷, 第4期 * |
| 袁诗璞: "第九讲──镀前除油处理", 《电镀与装饰》 * |
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Application publication date: 20120829 |